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...d by [[Moore]] for its ''[[Non-Leakable]]'' pens, for which three distinct patents were filed, one in [[1893]] ({{Cite patent|US|501895}}) and two in [[1896]] In addition to the [[Moore]] the system was also used by the [[Montblanc]] in their first [[Rouge et Noir]] models, almost certainly brought to Germ

...]] not copying the design thus avoiding all possible legal problems due to patents. .... In particular, an interesting variant is the ''[[push-knob]]'' made by [[Montblanc]], in which the blind cap itself serves as a button. In fact, it can be par

...t a substantially identical system called [[Compressor]] was invented by [[Montblanc]] in [[1923]] (patent {{Cite patent|DE|400356}}) and used from [[1924]] to ==Related Patents==

...on the section (as used by the [[Aurora]]) or on the cap (typical of the [[Montblanc]]). Engravings on metal parts (clips, cap edge, head) are also classified a

...some models (the first introduction of this innovation is attributed to [[Montblanc]]) require the presence of a special safety mechanism (usually a pin mounte ...r to adopt it on a large scale.<ref>but the company has done so using many patents of ''Francis C. Brown'' of [[Caw's]], which was the first brand to use it,

| patents ({{Cite patent|US|1980159}}) the ''[[Adjustable Point]]'' nib {{VoceCronologia|Montblanc|NULL|generico

| patents its [[spoon filler]] {{VoceCronologia|Montblanc|NULL|modifica

{{VoceCronologia|Montblanc|NULL|modifica {{VoceCronologia|Montblanc|Montblanc Meisterstück|modifica

...[[Numerazione Waterman|Waterman numbers]] and the [[Numerazione Montblanc|Montblanc numbers]], they were also used to identify the different models of a produc ==Related Patents===

| patents the [[Lox-Top]] cap {{VoceCronologia|Montblanc|Montblanc 134|lancio|||}}

{{VoceCronologia|Montblanc|Montblanc 132|lancio|||}} {{VoceCronologia|Montblanc|NULL|modifica